Legal claims defining the scope of protection, as filed with the USPTO.
1. A method comprising: displaying presentation content as a presentation content portion of an image displayed at a videoconference endpoint, the presentation content including at least one of text and graphics; sending an electronic request from the videoconference endpoint to a multi-point control unit, MCU, including data indicative of a selected region of the presentation content to increase a scale of the selected region of the presentation content portion of the image displayed at the videoconference endpoint; changing an encoding of the presentation content at the MCU to increase the scale of the selected region of the presentation content portion of the image; and sending an enhanced presentation stream that includes the presentation content portion and the selected region of the presentation content portion having an increased scale of the image to the videoconferencing endpoint.
2. The method of claim 1 , wherein the MCU is a transcoding MCU, and the changing includes increasing a scale to over 100% for the presentation content portion and increasing the scale of the selected region in which the presentation content portion is displayed so as to have a magnifying effect on the presentation content portion that is displayed.
3. The method of claim 1 , further comprising receiving another electronic request from another videoconference endpoint; and sending another enhanced presentation stream to the another videoconference endpoint in response to receiving the another electronic request.
4. The method of claim 1 , wherein the changing includes increasing the scale by a user-specified amount.
5. The method of claim 1 , wherein the changing includes increasing the scale by an amount specified in a pull down menu displayed at the videoconference endpoint.
6. The method of claim 1 , wherein the sending an electronic request includes sending a dual-tone multi-frequency (DTMF) signal to the MCU from the videoconferencing endpoint.
7. The method of claim 1 , wherein the changing includes mixing the enhanced presentation stream at the MCU into a main video stream.
8. The method of claim 1 , wherein the sending includes sending the enhanced presentation stream in a separate channel than a conference main video channel.
9. The method of claim 1 , wherein the changing includes overlaying the enhanced presentation stream over a portion of the image.
10. A system comprising: an interface that receives presentation content, and receives, at a transcoding MCU, an electronic request from a videoconference endpoint to increase a scale of a selected region of a presentation content portion of an image displayed at a videoconference endpoint that sent the electronic request; and a processor configured to change an encoding process applied to the selected region of the presentation content so as to increase a scale of the selected region of the presentation content portion of the image, and send an enhanced presentation stream that includes the selected region of the presentation content portion having an increased scale of the image to the videoconferencing endpoint.
11. The system of claim 10 , wherein the processor and interface are disposed in the transcoding MCU, and the processor is configured to change the encoding to increase a scale to over 100% for the selected region of the presentation content portion and increase the scale of the image in which the presentation content portion is displayed so as to have a magnifying effect on the selected region of the presentation content portion that is displayed.
12. The system of claim 10 , wherein the interface is configured to receive another electronic request from another videoconference endpoint; and send another enhanced presentation stream to the another videoconference endpoint in response to receiving the another electronic request.
13. The system of claim 10 , wherein the processor is configured to increase the scale of the selected region of the presentation content portion by a user-specified amount.
14. The system of claim 10 , further comprising: the videoconferencing endpoint, wherein the processor is configured to change the scale by an amount specified in a pull down menu displayed at the videoconference endpoint.
15. The system of claim 14 , wherein the videoconference endpoint is configured to send the electronic request as a DTMF signal.
16. The system of claim 10 , wherein the processor is configured to mix the enhanced presentation stream into a main video stream.
17. The system of claim 10 , wherein the processor is configured to send the enhanced presentation stream in a separate channel than a conference main video channel.
18. The system of claim 10 , wherein the processor is configured to encode the presentation content to overlay the enhanced presentation stream over a portion of the image.
19. A non-transitory tangible computer readable medium encoded with logic for execution and when executed by a processor operable to: display presentation content as a presentation content portion of an image displayed at a videoconference endpoint, the presentation content including at least one of text and graphics; send an electronic request from the videoconference endpoint to a multi-point control unit, MCU, to increase a scale of a selected portion of the presentation content portion of the image displayed at the videoconference endpoint; change an encoding of the presentation content at the MCU to increase the scale of the selected portion of the presentation content portion of the image; and send an enhanced presentation stream that includes the presentation content portion having an increased scale of the selected portion of the presentation content portion of the image to the videoconferencing endpoint.
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October 6, 2015
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